Low Noise Motor Solution for Thermostatic Radiator Valve

Solution for Thermostatic Radiator Valve

The classic thermostatic radiator valve contains a plug (which forms a wax motor), usually made of wax, which expands or contracts with the surrounding temperature. The plug is connected to the pin, and the pin is connected to the valve. As the temperature area increases, the valve gradually closes, thereby limiting the amount of hot water entering the radiator. This allows you to set the maximum degree for each room.

When the valve works by detecting the temperature of the surrounding air, it is important to ensure that the valve is not covered by materials (such as curtains). If you remove the controller from the valve, the valve will open and the radiator will always be hot.

Thermostatic Radiator Valve

How Kinmore Motor Supplier Make Improvement

Kinmore provides professional and reliable micro-motors for the thermostatic radiator valve. Our new series of gear motor, KM-26M300-516-SD is one of the regular Models that used in this valve system. It is based on the dc motor RF-300, which has an input Current of 3V DC and a Speed of 2900 rpm. Due to the special design of the plastic screw structure, KM-26M300-516-SD has a thrust Torque of The stable Current 60mA and stable Torque ensure long service life.

Thermostatic Radiator Valve


Motor Technical Parameters:

Rated Voltage2.2VDC regulated power supply
Rotation of directionStretch out and drawback movement While Red wire connects to the positive pole and the pushrod will be pushed upward. (See the outdrawing for ref.)
 Current Limiting60mA 
 Rated Force8 MinkgfReference:17 kgf  Max.
 Displacement Distance4.5mm 
Voltage Range2~3.3V 
Stall Current90mA 
Working Temperature-30~+60 Reference
 Noise Level40dBdB(A)30cm Distance Background noise less than

The Thermostatic Radiator Valve Gear Motor Features:

  1. Sealed and with worm gear
  2. Max load, the Torque of
  3. Compact Size and noiseless design
  4. The electrical performance of motors such as Voltage, Speed, etc. can be customized after a professional evaluation


With over 20-year experience in motor drive solutions, we can quickly customize motor programs to meet customer requirements and provide customized services such as drawings, material selection, and proofing according to customer needs.  For more information on the thermostatic radiator valve motor solution, please contact our sales engineer.

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